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Progressive Covering of the Accretion Disk Corona during Dipping in the LMXB XB 1916-053
R. Morley, M. J. Church, A. P. Smale +1
Results are reported for analysis of the extensive Rosat observation of the dipping low mass X-ray binary XB 1916-053. Dipping is 100% deep showing that the emission regions are co…
2-Nucleon 1-Loop Corrections to Pion Double Charge Exchange within Heavy Baryon Chiral Perturbation Theory
A. Misra, D. S. Koltun
One-loop corrections at the two-nucleon level to Pion Double Charge exchange (DCX) scattering off a nuclear target at threshold, are calculated within the framework of Heavy Baryon…
X-ray outburst of CI Cam/XTE J0421+560: RXTE observations
M. Revnivtsev, A. Emelyanov, K. Borozdin
We present the results of observations of XTE J0421+560 X-ray transient with Rossi X-ray Timing Explorer in the beginning of April 1998. Lightcurve, obtained by ASM all-sky monitor…
Quantum Carpets made simple
I. Marzoli, F. Saif, I. Bialynicki-Birula +3
We show that the concept of degeneracy is the key idea for understanding the quantum carpet woven by a particle in the box.
The double-lined spectroscopic binary alpha Andromedae: orbital elements and elemental abundances
T. Ryabchikova, V. Malanushenko, S. J. Adelman
We performed a spectroscopic study of the SB2 Mercury-Manganese star alpha And. Our measurements of the secondary's radial velocities result in improved orbital elements. The secon…
BeppoSax Spectral Survey of soft X-ray selected BL Lacs
A. Wolter, A. Comastri, G. Ghisellini +10
We present X-ray spectra obtained with BeppoSAX (Satellite per Astronomia X) of 10 BL Lac objects, selected from the Einstein Medium Sensitivity and Slew Surveys. We find that in a…
The Particle in the box: Intermode traces in the propagator
I. Marzoli, I. Bialynicki-Birula, O. M. Friesch +2
Characteristic structures such as canals and ridges --intermode traces-- emerge in the spacetime representation of the probability distribution of a particle in a one-dimensional b…
The Observational Status of Stephan's Quintet
Mariano Moles, Isabel Marquez, Jack W. Sulentic
We present new photometric and spectroscopic data for the galaxies in the compact group known as Stephan's Quintet. We find the strongest evidence for dynamical perturbation in the…
Towards a consistent model of the Galaxy: I. kinematic properties, star counts and microlensing observations
D. Méra, G. Chabrier, R. Schaeffer
We examine the most recent observational constraints arising from i) small-scale and large-scale Galactic dynamical properties, ii) star counts at faint magnitude and iii) microlen…
Towards a consistent model of the Galaxy: II. Derivation of the model
D. Méra, G. Chabrier, R. Schaeffer
We use the calculations derived in a previous paper (Méra, Chabrier and Schaeffer, 1997), based on observational constraints arising from star counts, microlensing experiments and…
A radiation-driven disk wind model for massive young stellar objects
Janet E. Drew, Daniel Proga, James M. Stone
A radiation-driven disk wind model is proposed that offers great promise of explaining the extreme mass loss signatures of massive young stellar objects (the BN-type objects and mo…